Meaning : Recover something or somebody that appeared to be lost.
Example :
We got back the money after we threatened to sue the company.
He got back his son from the kidnappers.
Synonyms : win back
Meaning : Take revenge or even out a score.
Example :
I cannot accept the defeat--I want to get even.
Synonyms : get even
Meaning : Get one's revenge for a wrong or an injury.
Example :
I finally settled with my old enemy.
Synonyms : settle